Wunderlist.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “type” attribute is unnecessary for JavaScript resources.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Bad value “” for attribute “src” on element “img”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “iframe” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Stray end tag “div”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “main”.
Stray end tag “main”.
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